THE 



JOURNAL OF MALACOLOGY. 



No. 1. MARCH 31st, 1903. Vol. X. 



MALACOLOGICAL NOTES.* 



BY E. R. SYKES, B.A., F.L.S. 



13.— The Value of the name Rhodina, de Morgan. 



Recently, '" I described and figured a shell from Kelantan, under the 

 name Rhodina (?) mirahilis. I felt some doubt as to whether the form 

 really belonged to de Morgan's genus, as the single species he referred to 

 it -' was, and is, unknown to me. Dr. Moellendorff '*' expressed the 

 view that the form did really belong to de Morgan's genus. Whether 

 this be so or not the name BhoiJina cannot be used in Molluscs, having 

 been employed by (luenee '^' in 1854 foran Austi'alian butterfly. Under 

 these circumstances I propose the new genus 



Plieaxis. 



and take as the type my Rhodina (?) mirahilis. I feel but little doubt 

 that de Morgan's R. jerakensis also belongs here. 



Dr. Moellendorfl suggests that the group should be reduced to a sub- 

 genus of Prosopeas, but it appears to me to be distinct from the typical 

 Nicobar forms ; it may be remarked, with regard to this last name, that 

 Prosopea and Prosopeus had previously been used in Zoology. 



* Sec Vol. viii, p. 109. 



1. Ante, vol. ix, pp. 22, 01. 



-'. Bull. Soc. Zoo). France, 1885, vol. x, p. .300. 



^. Nachibl. Deutsch. Malak. Ge.s., 1902, p. 140 : . j' 



■•. Hist. Nat. Insectcs, Spec. Gen. Lepidoptercs, 1851, vol. viii, p. 10. 



JOCRN. OF_MA]jAC., 1903, vol. X, No. 1, 



